Hi Maj, In the SDK Guide, it says to set the Debugging > Command to the full path to After Effects. How are you starting the debug? If you choose Debug from the menu, it will start debugging using the StartUp Project. If the Debugging > Command hasn't been set for that project, you'll get a similar error "Unable to start program...", referring to the default StartUp Project, which is artie.aex. So if that's what you're doing, you'll need to right-click the project you want to debug, and set that as the StartUp Project. Another option is to launch AE manually, and attach to the process at any point using Debug > Attach to Process.
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